Vice President JD Vance and another top official in President Donald Trump's administration on Monday argued that serving the memory of Charlie Kirk means pursuing left-leaning groups they portray as bent on undermining national unity. Vance, who guest-hosted the slain conservative activist's livestream show, amplified right-wing calls for a broadside against leftist groups after Kirk was assassinated last week as he addressed college students. White House Deputy Chief of Staff Stephen Miller, Vance's guest on the programme, said Kirk's final message to him called for a coordinated effort against unnamed left-wing groups accused of promoting violence, pledging the federal government would use "every available resource" to dismantle them. "With God as my witness, we are going to use every resource...