Donald Trump declared war on the Republican establishment Tuesday, lashing out at House Speaker Paul D. Ryan (Wis.), Sen. John McCain (Ariz.) and other GOP elected officials as the extraordinary turbulence within the Republican Party intensified four weeks from Election Day. One day after Ryan said he would no longer campaign on Trump’s behalf, the GOP nominee said as part of a barrage of tweets that Ryan is “weak and ineffective” and has provided “zero support” for his candidacy. Trump also declared that “the shackles have been taken off” him, freeing him to “fight for America the way I want to.” Trump called McCain “foul-mouthed” and accused him with no evidence of once begging for his support. McCain is no longer backing Trump.