Russian Foreign Minister Sergei Lavrov and US Secretary of State John Kerry are holding a meeting on the sidelines of the Nuclear Security Summit in The Hague, ITAR-TASS reported.
The discussion is expected to focus on nuclear security, Syria and Ukraine.
A source in the Russian delegation told reporters earlier in the day that Lavrov was also scheduled to meet with acting Ukrainian Foreign Minister Andriy Deshchitsa at his request.