• U.S. Sen. Chris Murphy (D-CT) (L), speaks at a news conference December 5, 2016 on Capitol Hill in Washington, DC. Photo: Alex Wong / Getty Images / 2016 Getty Images

It’s going to be a long few years for Chris Murphy.

Connecticut’s Democratic junior U.S. senator — once on Hillary Clinton’s short list of running mates — is showing no signs of letting up in his Twitter flaming of President-elect Donald Trump.

Murphy’s most recent torrent of criticism of Trump stems from Trump’s phone call Friday with the president of Taiwan, which Trump’s detractors say could upset the delicate diplomatic channels between the U.S. and China.

“What has happened in the last 48 hours is not a shift. These are major pivots in foreign policy w/out any plan. That’s how wars start,” Murphy Tweeted Friday.

Trump’s campaign manager and surrogate Kellyanne Conway bristled at Murphy’s Twitter burn.

“It sounds like Sen. Murphy’s tweet is pretty incendiary,” Conway told CNN. “This is how wars start, and it’s a major policy shift because he had a phone call? That’s pretty negative and pretty presumptuous.”

Trump is believed to be the first president to speak to Taiwan’s president since 1979, when the U.S. recognized Beijing as the rightful government of China in its decades-old conflict with the breakaway island province.

“If Taiwan call was planned, it’s no excuse,” Murphy Tweeted…