US senator calls for Putin's assassination
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He repeated the call later in a series of tweets, saying "the only people who can fix this are the Russian people."
The former presidential candidate also wondered if "a more successful Colonel Stauffenberg" existed in the Russian military, alluding to the German officer whose bomb failed to kill Adolf Hitler in 1944.
"You would be doing your country -- and the world -- a great service," he added.
The senator, who has served in congress for over twenty years and has at times been a close ally to former president Donald Trump, had earlier in the day introduced a resolution condemning the Russian president and his military commanders for committing "war crimes" and "crimes against humanity."
Moscow claims it does not target civilian areas, despite widespread evidence to the contrary.