MOSCOW — Just days after President Obama announced a historic thaw in relations between the United States and Cuba, one of Russia’s most hawkish emissaries was set to arrive in Havana on Friday to meet with Cuba’s leadership.

The emissary, Dmitri O. Rogozin, the outspoken deputy prime minister whose portfolio includes Russia’s weapons and space programs, had already panned the United States’ supposed change of heart toward Cuba as just a calculated change in tactics.

“Now they will suffocate them in their embrace,” Mr. Rogozin said Thursday on Twitter during a tour through Latin America, where he was negotiating economic and weapons contracts in Brazil, Venezuela and other countries.

There is little trust in the benevolence of American foreign policy in Moscow now, largely because of the perceived hand of the State Department in Ukraine’s revolution in February. A well-traveled but still popular joke asks why there has not been a revolution in Washington. The answer: There is no American Embassy there.