Why it matters: The withdrawal comes one day after Russian President Vladimir Putin annexed four regions of Ukraine, including the Donetsk region where Lyman is located.The latest: Ramzan Kadyrov, the leader of the southern Chechnya region who describes himself as a footsoldier of Putin, said called for more drastic measures, per Reuters.- "In my personal opinion, more drastic measures should be taken, right up to the declaration of martial law in the border areas and the use of low-yield nuclear weapons," Kadyrov wrote on Telegram.- In a video posted by the ministry, two soldiers can be seen unraveling the Ukrainian flag.The big picture: Putin claimed in a speech Friday that Russia would annex four regions of Ukraine — Donetsk, Luhansk, Kherson and Zaporizhzhia, Axios' Dave Lawler writes."