US election 2016: Cruz and Kasich team up to slow Trump
Donald Trump's two rivals for the Republican party's presidential nomination have announced they will now co-ordinate strategies against him.
Ted Cruz will cut campaigning in the Oregon and New Mexico primaries to help Mr Kasich, while the latter will give Mr Cruz a "clear path" in Indiana.
Mr Trump said his rivals were "totally desperate" and "mathematically dead".
He has a clear lead in delegates but but may still fall short of the 1,237 needed to win outright.
If he does not reach the target, the vote will go to acontested convention - where a different nominee may emerge through negotiations among party figures.