There are some good ideas in here, but unfortunately there is no American will to stop him.
The Obama administration seems more to be facilitating rather than opposing.
"Obama and Europe’s leaders keep trying to play by the rules even though
Putin has ripped up the rule book and thrown the shreds in their faces."
"Kremlin elites were right to laugh at Western sanctions Monday on a few
of Putin’s political hacks — the step was a joke. The laughter in Moscow
surely died down on Thursday, when Obama personally made a stronger statement and announced new sanctions against oligarchs and assets that matter to Putin."
"Western leaders would be wise to follow the money: Sanction the elites
who support Putin, go after the family members they use to hide their
assets abroad and scrutinize their companies. If existing laws are
inadequate to deal with billionaire thugs who enable a dangerous regime,
write new ones. And do all this quickly, because the price to remove
Putin goes up with every delay. Eventually, that price will be paid not
just in the cash Western countries are afraid to lose but also in human
lives."