Will Trump's Threats Push Putin to Negotiate?

Since long before his inauguration this week and his election in November, President Donald Trump has been promising to broker an end to Russia's war against Ukraine while providing few hints about how he would seek to get it done. On January 22, two days after starting his new term, Trump laid out one lever he indicated he would use to get Russia to the negotiating table, a crucial and challenging initial step toward any deal: slapping additional sanctions on Moscow if it proves recalcitrant. "If we don't make a 'deal,' and soon, I have no other…