You can forget Israel. Picking up a tussle with the Chinese is the last thing they would want to do. Besides, China appears at good terms with them.
Counting on major diplomatic support from the US would yield little on the ground. After all, we are talking about China, an independent power. The US holds virtually no diplomatic leverage against China. Inviting direct US involvement in Sino-Indian conflict would also be in the negation of India's national and international ideology. It will relegate India to dependent power, a regional policeman of the US, and also compromise its non-allied status (not that it mattered before or now). For better collaboration, the US might force India to buy US origin military equipment.
As for Russia, as long as India doesn't invite the US, it would remain impartial but if India does invite the US, it might decide to side with China and perhaps withdraw logistics support for the Russian origin Indian military hardware. But above all, the question is whether the US would be willing to commit to India diplomatically and/or militarily? So far the Trump Admin & the US Congress have both remained somewhat quiet, even as their influential think-tanks, lobbyists and other influential actors push for India's support.