US, Taliban keep open door to talks after summit scrapped

The United States and Afghanistan's Taliban on Sunday both left the door open to fresh talks after President Donald Trump abruptly canceled a secret summit, but the insurgents threatened to inflict greater costs.Washington also said it would not relent in fighting the militants after Trump blamed the scuttling of the unprecedented meeting on a Taliban attack that killed a US soldier.Trump said he had invited Taliban leaders and Afghan President Ashraf Ghani for talks Sunday at the Camp David pre