Ukrainian leader Volodymyr Zelenskyy’s five-year presidential term expired in May.

Kyiv denies Minsk’s claims that Ukrainian troops are being deployed near the two countries’ shared border.

Moscow continues to blame the U.S. for a June 23 missile attack that killed four civilians near Crimea’s port of Sevastopol.

EU members Lithuania and Estonia sign similar pacts with embattled Ukraine.

Moscow blames Washington for missile attack that killed four Russian civilians.

Attack with U.S.-supplied munitions ‘will not go unanswered,’ Russia’s foreign ministry told ambassador.

Five slain perpetrators have since been identified, Russian authorities say.

Russian leader receives warm welcome in Vietnam, while US officials prepare to follow up.

Armenia signals intention to quit Russian-led security bloc.

The North Korean leader said the treaty elevates bilateral relations ’to the level of an alliance.’