Dhaka, June 23 -- Thailand's prime minister, seeking to fend off calls for her resignation, said on Sunday all coalition partners have pledged support for her government, which she said would seek to maintain political stability to address threats to national security.Paetongtarn Shinawatra has faced criticism for her perceived mishandling of a border row with Cambodia, including over a phone call with the country's former leader, Hun Sen, the audio of which was leaked on Wednesday.After the initial leak, Hun Sen released the full audio, in which Paetongtarn appeared to kowtow before the veteran Cambodian politician and to denigrate a senior Thai military commander - crossing red lines for her critics and some former allies.A major coalitio...