Koirala led his country's delegation to the United Nations and made carefully poised visits to China and India, then increasingly at odds over territorial disputes. Yet, he was in trouble at home almost from the beginning. His land reform measures, especially the revision of the tenancy laws so easily passed by parliament, deeply offended the landed aristocracy which had long dominated the army. King Mahendra, on 15 December 1960, suspended the constitution, dissolved parliament, dismissed the cabinet, imposed direct rule, and for good measure imprisoned Koirala and his closest government colleagues. Many of them were released after few months, but Koirala, though he was suffering from throat cancer, was kept imprisoned without trial until 1968.