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The Trump administration's decision to sanction 19 Russian individuals and five Russian entities for allegedly interfering in the 2016 election and engaging in cyber-attacks is a "really good start," but more must be done, Steve Hilton said on "Outnumbered" on Thursday.

The sanctions, which were announced Thursday by the Department of the Treasury, mean all property of the individuals and entities subject to U.S. jurisdiction is blocked. Among those being sanctioned are the 13 Russians who were indicted in Special Counsel Robert Mueller’s probe last month.

The sanctions come as leaders of the U.S., Germany and France have joined together with the United Kingdom in accusing Russia of being behind a recent nerve agent attack on an ex-Russian spy.

"This announcement today is a step in the right direction," Hilton said. "But frankly, I don't think you're really going to get [Russian President Vladimir] Putin's attention and really get him to rethink his completely irresponsible and reckless sort of adventurism around the world until you really hit him where it hurts, and that is energy."

He explained that Putin's whole regime depends on energy, and half of Europe is totally dependent on Russian energy.

"What we've really got to do is, I think, have a complete energy boycott on Russia," Hilton said. "By the way, that's a huge opportunity for America to sell our energy around the world. Then you'll get his attention."

Watch more above, and see John Bolton explain why he thinks the chemical poisoning of Sergei Skripal, 66, and his daughter Yulia, 33, in an English city was an "act of defiance" by Putin.

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