So he answered the question of Trump whether Obama was too soft on Russia, when it annexed Crimea.
"Yes, he was too soft – let’s take a different course together: give defensive lethal assistance to Ukraine and keep sanctions on Russia," McCain wrote on Twitter.
Earlier on Wednesday, U.S. President Donald Trump posted on his Twitter page that Crimea had been taken by Russia under the leadership of Barack Obama, who had been too soft on Russia.
White House Press Secretary Sean Spicer said that US President Donald Trump expected Moscow to stop the violence in eastern Ukraine and return Crimea to the Ukrainian authorities. Spicer also noted that the policy of Washington's sanctions against Moscow would remain unchanged.