India and Canada signaled a significant diplomatic thaw nearly two years after the killing of a prominent Canadian Sikh cleric set off a deep rift between the two countries that culminated in each expelling the other's senior diplomats.

       The two countries said in separate statements on Tuesday that they would appoint new high commissioners, or ambassadors, restart trade talks and restore visa processing and other services to citizens. The announcements came after Prime Minister Narendra Modi of India and the Canadian leader, Mark Carney, met during the Group of 7 nations summit in Kananaskis, Alberta, on Tuesday. India is not a member of the bloc but Mr. Modi was invited to attend by Mr. Carney.

       “The leaders agreed to designate new high commissioners, with a view to returning to regular services to citizens and businesses in both countries,” according to a statement from Mr. Carney’s office.

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