During clashes with Pakistan, India secretly asked Israel for weapons. It sought mortars and mortar bombs without Israeli markings, got them, and publicly continued to condemn Israel
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Idiom. Involves the following sequence of events -
1. Oppose creation of Israel
2. Ask Israel for help in '62,'65 and '71 wars.
3. Israel sends ammunition
4. Tell them to remove Israeli markings from ammunition (presumably because Muslim brothers in India will be offended otherwise.)
5. Condemn Israel in public; support Palestinian cause
Example: I helped him so much, still he did a Nehru on me.