No ambassador. No problem? As US officials play down the prolonged stalemate regarding the confirmation of K.T. McFarland – a former top aide to US President Donald Trump – as ambassador to Singapore, some observers say the development raises further doubts over the coherence of America’s Asia policy. The stalled appointment means a lower ranking charge d’affaires will, for the foreseeable future, lead the US embassy in Singapore, one of Washington’s closest…