The Indian and Chinese foreign ministers have exchanged protests over clashes in a disputed Himalayan border area which led to the deaths of at least 20 Indian troops. India's Subrahmanyam Jaishankar said China tried to erect a structure inside Indian territory, while China's Wang Yi said Indian troops attacked first. But in a phone call both men promised not to escalate the situation. It was the first deadly clash at the disputed border for at least 45 years. Soldiers reportedly brawled with sticks and bats but no shots were fired.