US Presidential Poll debate: Barbs flew between Republican presidential contender Vivek Ramaswamy and former UN Ambassador Nikki Haley on Wednesday during a televised debate. War of words spiraled into the 'Battle of the Heels, Part 2' as the unfiltered Vivek Ramaswamy lobbed a personal insult at ex-South Carolina Governor Nikki Haley, the only female candidate on stage. Nikki Haley, Vivek Ramaswamy, and Florida Governor RonDeSantis were involved in a heated exchange on US foreign policy – that news agency AFP called a "first in Republican debates" – when the Indian-origin Vivek Ramaswamy branded Nikki Haley a "Dick Cheney in three-inch…