NEW DELHI — The Pentagon is reiterating its enthusiasm for India to consider purchasing the F-35 Joint Strike Fighter, even though New Delhi already shut out U.S. providers from its fighter competition.

Air India management has deferred by a month a Boeing 787 training program for a section of its pilots after the carrier’s plans prompted protests from one of the airline’s two pilots unions.

Fresh labor unrest is brewing at cash-strapped national carrier Air India as more than 100 pilots threatened to resign over alleged discrimination by the company. About 10 international flights were canceled on Oct. 31 as 23 Air India pilots reported sick, an airline official said.