Donald Trump said Thursday he would not take part in another debate with Kamala Harris, as the White House rivals headed back to battleground states that are set to decide a nail-bitingly close US presidential election. The Republican former president lashed out two days after his first televised clash with the Democratic vice president, when Harris put Trump on the defensive and got under his skin with a series of barbs. “THERE WILL BE NO THIRD DEBATE!” the 78-year-old wrote on his Truth Social platform, including in his tally the earlier debate with Joe Biden in June that drove the incumbent…