Russia and Ukraine have concluded their second round of peace talks, which came after the two countries traded overnight attacks. While the meeting was under way in Istanbul, Ukrainian President Volodymir Zelensky joined a summit with the leaders of Nato's eastern and Nordic members in the Lithuanian capital of Vilnius.

Though the knock-on effects are unclear, some military commentators have called the strike Russia's "Pearl Harbor." Hopes for direct peace talks, which resume Monday, remain low.

Russian and Ukrainian delegates are meeting in Istanbul on Monday for their second set of direct peace talks, a day after Kyiv launched a shock drone attack on Russia’s nuclear-capable bombers.

Ukraine questions Russia's commitment to peace after Moscow failed to send its negotiation proposals to Kyiv before the meeting.

Ukraine and Russia met in Istanbul on Monday to exchange memorandums on a possible ceasefire to end Vladimir Putin’s three-year war, despite a gulf remaining between the two sides’ positions.

The drone strikes on Russian air force bases weaken Moscow’s ability to wage war on its neighbor and undermine its capacity to threaten more distant rivals.

Ukraine has developed, tested, and deployed the Sky Sentinel, a AI-powered turret that it says can down Russia's Shahed drones and cruise missiles.

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