Russian Deputy Foreign Minister Sergei Ryabkov said Moscow is considering taking steps to resume nuclear tests. He made the warning while cautioning President-elect Donald Trump against resuming nuclear testing next year in an interview with the Russian newspaper Kommersant.

Russia's point man for arms control cautioned Donald Trump's incoming administration against resuming nuclear testing, saying Moscow would keep its own options open.

After the US and Russia tested a nuclear bomb in the 1990s, Russia signed the Comprehensive Nuclear Test Ban Treaty in 1996 and ratified it in 2000.

Andrii Yusov of Ukraine's Defense Intelligence said that Kyiv is increasing the range of its unmanned aerial vehicles.

Russia’s drone strikes on Ukraine have increased sixfold in four months. The offensive is being fueled by a facility in Russia’s southern Tatarstan region, which is ramping up production with the help of a low-skilled workforce of Russian students.

Ukraine has carried out a daring strike deep into Russian territory, targeting a fortified facility in the Oryol region, just 200 miles southwest of Moscow. This site, responsible for housing Iranian-made Shahed drones used in attacks on Ukraine’s civilian infrastructure,