Taipei mayor won't publicly back 'One China', Shanghai forum at risk

Ko Wen-je speaks after winning the local elections at the campaign headquarters in Taipei November 29, 2014. REUTERS/Pichi Chuang

TAIPEI (Reuters) - An annual forum between the mayors of Shanghai and Taipei might not take place as scheduled this year because the mayor of the Taiwan capital will not publicly endorse Beijing's "One China" principle.

The dispute highlights the deep mistrust between the two sides despite the establishment of the best ever trade ties since Taiwan's President Ma Ying-jeou took office in 2008.