Government sources confirmed that "very advanced discussions" are under way after reports emerged from Washington that the U.S., UK and a handful of NATO allies are in talks about bolstering their military presence on the coalition's eastern flank, The Telegraph said.

It is thought that a public announcement on new deployments from a smaller grouping of partners within the alliance could come as soon as Thursday, the report said.

(Reporting by Rhea Binoy in Bengaluru; Editing by Leslie Adler)