New Delhi [India], May 27 (ANI): Former Indian diplomat Veena Sikri questioned Islamabad's credibility as a mediator amid rising geopolitical complexity in West Asia and noted how a fragile ceasefire remains in place as the United States and Iran are yet to conclude the peace talks. In a conversation with ANI over the evolving situation in West Asia and the Gulf region, Sikri termed the ceasefire 'very fragile'