The Nuclear Security Summit has kicked off in Washington on Friday. President of Armenia Serzh Sargsyan also attends the event at the invitation of the U.S. President Barack Obama.

The presidents and prime ministers of over fifty countries take part in the international forum held at Walter E. Washington Convention Center.

The summit will address the measures taken in fight against nuclear terrorism, the mechanisms of joint resistance to new tasks, as well as neutralization and prevention of nuclear terrorism threats.