BANGKOK — The US reaffirmed its commitment to signing a global climate treaty Monday, with pressure mounting for Washington to take a leading role as negotiations resumed over the disputed draft text. ‘We want to be part of a new agreement,’ said Jonathan Pershing, the US head of delegation for the UN climate change negotiations, as meetings began in Bangkok amid fears that time is running out to break a deadlock on the pact. The talks here are the next to last before a showdown in Copenhagen at the end of the year, when 192 countries must agree on a treaty for tackling greenhouse gases beyond 2010, after the current Kyoto Protocol expires. The US — which signed the Kyoto deal but later saw it rejected by Congress — is due to introduce its new climate change and energy bill in the Senate this week and there are fears the bill will not pass ahead of Copenhagen. ‘The waiting is now on what position the US administration will take,’ UN Climate Chief Yvo de Boer said at a press briefing Monday. ‘Will the US administration be able to take a position before US legislation has […]