The war between Russia and Ukraine has been unrelenting over the last 24 hours as Ukraine says Russia launched around 5,500 attacks. Now, President Donald Trump is giving President Vladimir Putin 50 days to back down or face secondary tariffs.

Russia's Defense Ministry, meanwhile, said its forces downed at least 66 Ukrainian drones overnight into Tuesday morning. Among the areas targeted was the southwestern Voronezh region which borders northeastern Ukraine. At least 16 people were injured there, Gov. Aleksandr Gusev said on Telegram.

The president left the door open for talks with his Russian counterpart but complained about Russia’s continued aerial attacks on Ukraine.

President Trump has taken an unconventional approach to trade negotiations by sending form letters to foreign leaders.