By Saskia Koopman Peter Mandelson, the Labour former minister and president of advisory firm Global Counsel, is reportedly a front runner to take over as British ambassador to the United States. Lord Mandelson is said to be in the running to replace Dame Karen Pierce, who was appointed in 2020 and will remain in Washington until after Trump’s inauguration in 2025, according to The Times. The Labour peer told the BBC on Sunday that he was “more in favour of a new relationship (with the US) rather than a special one”. However, when asked about the ambassador role, he added “nobody has spoken to …