Yes, as per the newspapers, a German and a US citizen, acting as tourists, who funded the protests have been arrested by the CBI

Really, I do not know but there are chances that this could be true.

In a country where people don't raise any major objections against food adulteration, spurious medicine, unhygienic living conditions and other such issues which affects their daily life, to carry out a protest in such a massive scale on environmental grounds does seem to be a bit suspicious. Even in a movement like Anna Hazare's agitation against corruption this kind of people turning out for daily protest could not be seen. There has to be some kind of heavy funding as it happens in a political rally for generating this kind of daily turn out of protestors. There is a possibility of some foreign funding involved here. As of now it is not clear as to who is the sponsor. The central government might have already investigated into the matter and hopefully doing the needful to overcome the hurdle.

No

No two doubts about it
American fears are nuclear weapon technology will proliferate and Americans would have to spend more to keep one step ahead of others

Nope,, but may be