UNITED NATIONS, United States: UN chief Antonio Guterres on Wednesday urged the United States and Russia to quickly sign a new nuclear deal, as the existing treaty was set to expire in a “grave moment for international peace and security.” The New START agreement will end Thursday, formally releasing both Moscow and Washington from a raft of restrictions on their nuclear arsenals.

A top Kremlin official has warned that if the New START treaty expires without a replacement, the world should be alarmed that the biggest nuclear powers have no limits for the…

Dmitry Peskov stressed that it would negatively affect "global security and strategic stability"