Russian armed forces are creating a “security buffer zone” along the border between Russia and Ukraine, President Vladimir Putin said Thursday.

A spokesperson for Ukraine's Foreign Ministry said Putin's words are further proof that Russia "is an obstacle to peace efforts."

Russian president Vladimir Putin ordered his troops to create a buffer zone on the border with Ukraine. Meanwhile, the US Senate has threatened Russia with tough sanctions. Read more about what happened on Thursday,

Ukraine pioneered the use of small drones on the battlefield. But in Russia’s Kursk region, Moscow’s fiber-optic cables helped turn the tide.

Ukraine said its drones hit production facilities of a company that makes batteries used to power Russian missiles.

Russia said on Wednesday its air defences shot down more than 370 Ukrainian drones, including some approaching Moscow, and the capital's airports were briefly shut down to ensure the safety of flights.