Consider the following statements:

1. The Protocol against the Smuggling of Migrants by Land, Sea and Air supplements the UN Convention against Corruption.

2. The UN Convention against Corruption is the first legally binding global instrument devoted specifically to fighting corruption.

3. A dedicated chapter on asset recovery is a distinguishing feature of the UN Convention against Transnational Organized Crime.

4. The UN Office on Drugs and Crime is mandated to assist countries in implementing both conventions.

Which of the statements given above are correct?