India, Feb. 10 -- Former US president Donald Trump won Nevada's Republican presidential caucuses Thursday after he was the only major candidate to compete, winning his third straight state as he tries to secure his party's nomination. Nikki Haley, his last major rival still in the race, skipped the caucuses even though they are the only contest in Nevada that counts toward the GOP nomination. Haley cited what she considered an unfair process favouring Trump and instead ran in Nevada's symbolic state-run presidential primary on Tuesday, when she finished behind the "none of these candidates" option.P17...