Putin didn't kill any Russian leader, he is one.
Nicholas II has abdicated the throne so he wasn't in power when he was killed. Lenin was shot but survived. Trotsky was never in power.
All your examples flow from top to bottom, that is the leader of the country likely ordered them.
But your "zero worries" argument rests on bottom up assassination, and Aleksander II is the most recent one.
Putin didn't kill any Russian leader, he is one.
Nicholas II has abdicated the throne so he wasn't in power when he was killed. Lenin was shot but survived. Trotsky was never in power.
All your examples flow from top to bottom, that is the leader of the country likely ordered them.
But your "zero worries" argument rests on bottom up assassination, and Aleksander II is the most recent one.