“Kidnapping is defined at common law as the taking or carrying away of one person by another, by force or fraud, without the consent of the person taken or carried away and without lawful excuse. It must involve an attack on or loss of that person’s liberty.”The law on kidnapping in England developed further in the case on R v D by the house of Lords which states kidnapping is defined as 1) an infringement on a person personal liberty by another, 2) which has force involved or is done by fraud, 3) without the consent of the person so taken or carried away and lastly, 4) which is without lawful excuse. This law was codified by the Child Abduction Act 1984. According to the decision in the case of Stork v Germany where it was made clear that what parliament meant by a deprivation of person personal liberty it means the objective element of a person confinement to a certain limited place for not a negligible length of time thus if there is a confinement for a negligible length of time, it should not be regarded as an infringing of the right. More so the act has two aspects, one relates to child abduction by parents and the other relates to child abduction by another. Our main focus is on child abduction by another specially girls who are unlawfully taken away from their guardians and later thrown into the business of forced prostitution. Section 2 of the act states that;
Subject to subsection (3) below, a person, other than the one mentioned in subsection (2) below, commits an offense if, without lawful authority or reasonable excuse, he takes or detains a child under the age of sixteen-
So as to remove him from the lawful control of any person having lawful control of the child; or
So as to keep him out of the lawful control of any person entitle to lawful control of the child.
The persons are:
(a)Where the father and mother of the child in question were married to each other at the time of his birth, the child father and mother;
(b)Where the father and mother of the child in question were not married to each other at the time of his birth, the child mother; and
(3) In proceedings against any person for an offence under this section, it shall be a defense for that person to prove
(a)Where the father and mother of the child in question were not married to each other at the time of his birth
(i)That he is the child father; or
(ii)That, at the time of the alleged offence, he believed, on reasonable grounds, that he was the child father; or
(b)That, at the time of the alleged offence, he believed that the child had attained the age of sixteen
This act widened the scope of proving kidnapping as the provision indicates that when a person commits an offense without lawful excuse or without reasonable excuse. â€˜Without Reasonable excuse is a new addition which means that even if the person is accused of kidnapping fails to prove that he had a lawful excuse, he can rely on reasonable excuse. Secondly age limit was added that is a child under age of 16. Thirdly it was made clear that what peoplerefer to. Lastly this act gave grounds for defense.
This act was amended by the Children Act 1989. Under section 2 of the act there is a requirement of intentional or reckless taking or detention of a child under the age of 16. The provision says that it is committed where a person who is:
Not the mother of â€˜the child in question
Where the parents were married at the time of the birth, his father or guardian, custodian or a person in whose favor a residence order is in force,
Takes or detains the child without lawful authority or reasonable excuse,
So as to remove him from the lawful control of any person having lawful control of him; or
So as to keep him out of the lawful control of any person entitled to lawful control of him.
So this act gave four ways in which the offense can be committed. First in line is detaining which is defined in section 3 as causing the child to be detained or inducing the child to remain with the accused or another person. Second comes taking which is defined as to include causing or inducing the child to accompany the accused or any other person or causing the child to be taken away. Thirdly removal is defined as removal of the child from control and does not refer to geographical removal of the child. Lastly lawful control however it has not been defined by any statute or court as yet.
Now since I have discussed the law on kidnapping briefly I will now get on the main argument that is kidnapping leading to prostitution of young girls and women. For example in UK, where there are number of offenses which may be included in the offense of kidnapping one of which is human trafficking which is defined under section 57-60 of the Sexual Offenses Act (2003). Section 57 which relates to trafficking into United Kingdom for sexual exploitation states:
A person commits an offense if he intentionally arranges or facilitates the arrival in, or the entry into, the United Kingdom of another person (B) and either-
He intends to do anything to or in respect of B, after but in any part of the world, which if done will involve the commission of a relevant offense, or
He believes that another person is likely to do something to or in respect of B, after Bâ€™s arrival but in any part of the world, which if done will involve the commission of a relevant offense.
According to the above provision the crime of trafficking in UK is committed when there has been made an intentional arrangement to enter UK or when there has been facilitation for entrance of a person unlawfully in UK. Human trafficking is usually done for the purpose of sexual exploitation. Sexual exploitation basically refers to sexual abuse of children and youth as it involves the interchange of sex related acts such as forced prostitution. Child prostitution is one of the branches of it. Thousands of girls are kidnapped each year for the purpose of sexual slavery. According to a report of French police thousands of teenage girls each year in Paris are reported missing which they presume are abducted and traded into Arab countries for sex trade. 
Similarly in Asia a research has shown that most of the sex trade businesses are run by underground gangs. Their work starts from kidnapping women from their home land usually from countries like Burma, Vietnam, China and Laos. The women are then trafficked to Thailand who is later thrown into the business of forced prostitution in places such as hotels and massage parlors. This is not the end of story kidnapped women are treated vulnerably once they are under control of the brothel owner. They are beaten up like animals if they do not conform to the orders of the pimp; they are also chained to their beds due to the fear of them escaping. They are also deprived of food and medical care.
Another way to procure women is through making false promises for jobs. Japan is one of the countries where women are brought with the promise of jobs as entertainers who end up working as prostitute. According to a research out of three-hundred thousand working women about 93% of the women bought in Japan with the promise of job serve as prostitutes. 
Thailand being the country with the most demand for prostitute has the greatest population of sex workers. This is why Thailand has organized sex tours by men from countries like Japan, South Korea, Australia and United States. The reason for human trafficking in Thailand on such a high level despite there being a high availability of local sex workers is due to the preference for blonde girls over locals by the customers.
The high rate of women kidnapping which later becomes the source of sex trade raised concerns for government of countries worldwide. That is why different countries emphasized on making domestic laws to minimize the crime. Such as in Brazil the government enacted law to minimize trafficking of kidnapped women.  California does not stay behind when it comes to enactment of laws for kidnapped people. According to Californian law if a person is convicted of kidnapping which is a simple felony, he/she will be imprisoned for 8 years in the Californian state prison.  Thailand which has remained the transit country for kidnapper/traffickers also has laws enacted to forbid this crime. The Prostitution Prevention and Suppression Act of 1996 impose high penalties on the offenders. The scope of the act includes procurement, luring, compelling or threatening the child under the age of 18 for the purpose of prostitution.  The act also help people under the age of 18 by providing them protection and vocational development for a period not more than 2 years.
United States also takes a strict stance on kidnapping women for the purpose of forced prostitution. Section 1583 and 1584 of the United States code is on forbidding kidnapping and slavery:
Section 1583: Whoever kidnaps or carries away any other person, with the intent that such other person be sold into involuntary servitude, or held as a slave; or whoever entices, persuades, or induces any other person to go on board any vessel or to any other place with the intent that he may be made or held as a slave, or sent out of the country to be so made or held, shall be fined not more than five-thousand dollars, or imprisoned not more than five years, or both; where as ;
Section 1584: Whoever knowingly and willfully holds to involuntary servitude, or sells or brings within the United States any person so held, shall be fined not more than five-thousand dollars or imprisoned not more than five years, or both.
The above provisions means that it is unlawful to hold a person in a condition of slavery, that is, a condition of compulsory service or labor against his/her desire or to persuade, induce or entice a person with the intent of making him a slave against his/her desire. A Section 1584 conviction requires that the victim be held against his/her will by actual force, threats of force, or threats of legal coercion. Section 1584 also prohibits compelling a person to work against his/her will by creating a “atmosphere of fear” through the use of force, the threat of force, or the threat of legal coercion.
Sometimes the situation gets beyond help which demands a need for an international arrangement between different countries to forbid the increasing kidnapping which later on becomes the source of forced prostitution. International Convention for the Suppression of the White Slave Traffic of May 18th was the first reform introduced towards the betterment of the anti-forced prostitution of kidnapped women. Initially it had Austria-Hungary, Belgium, Brazil, Denmark, France, German, Netherlands, Portugal, Russia, Spain, Italy, Britain and Sweden which was later joined by countries like Turkey, Japan and China.
International Convention for the Suppression of the Traffic of Women and Children came next in line which served about 60 countries that willingly joined this agreement in 1921. Convention for the Suppression of the Traffic in Persons and the Exploitation of the Prostitution of Others was signed in 1950 by approximately 60 countries of which Japan, Iran, Iraq, and Kuwait were amongst the signatories. Procuring, enticing or leading away, another person for the purposes of prostitution is the main focus of the agreement. The signatories of this treaty have the duty to make sure that the above is forbidden.
United Kingdom itself has made arrangement related to prohibition of human trafficking. They introduced National Referral Mechanism (NRM) in 2009. This was done in order to fulfill the duty imposed on them under the European Convention on Action Against Trafficking in Human Beings.  NRM work starts by first referring the potential victim to UK one of the two competent authority also known as first responder. All completed forms are then passed to United Nation Human Trafficking Centre (UKHTC) who then decides on which competent authority should deal with the case. When all the relevant procedure of (UKHTC) are followed and if the victim is found to be truly a victim, he/she is returned to their homeland with the help of UK Border Agency Assisted Voluntary Return of Irregular Migrants (AVRIM) process if the victim is from outside European Economic Area. Whereas if the victim is from the European Economic Area he/she will be put in touch with their embassy or NGO for help.
UK has also signed the United Nations Protocol to Prevent, Suppress and Punish Trafficking in Persons, Especially Women and Children, Supplementing the UN Convention against Transnational Organized Crime. 
It can be concluded based on the above information that there is a need of uniform worldwide agreement for the suppression of human trafficking which is aided by international kidnapping and later becomes the source of sexual exploitation and slavery throughout different countries like Thailand, China, England, USA and Japan etc. There is a need of constant interacting medium worldwide which assures the suppression of the crime of international kidnapping which leads to human trafficking. International agreements such as Convention for the Suppression of the Traffic in Persons and the Exploitation of the Prostitution of Others and Convention for the Suppression of the Traffic in Persons and the Exploitation of the Prostitution of Others 2005 plays an important role in combating this international problem. Apart from these agreements there is also a need of international criminal court which will hear cases from all the signatories of any previous or future agreements made just like European Court of Justice (ECJ) hears cases from all the member states. Lastly countries that are facing this crime should develop rehabilitation institutes for the victims.