Donald Trump looks set for White House nomination as Ted Cruz drops out of the running

Donald Trump has all but clinched the Republican US presidential nomination with a resounding victory in Indiana that knocked rival Ted Cruz out of the race and cleared his path to a likely November showdown with Democratic front-runner Hillary Clinton.

Billionaire businessman and reality TV star Mr Trump still needs about 200 delegates to formally secure the nomination, but Mr Cruz's decision to end his campaign removed his last major obstacle.