China gives shit to Nepal until and unless it feels unsecured in international trade especially with USA from Indian site. Even for india, when it becomes able to takeover it will not bother to take headache by scorching  us. That's the bottom line. Until when nepali leaders would not surrender to india to reach the power like maoist did to reach from 9 constiutenices to present status, india would do nothing as long as we keep them happy. This is century of globalization and indian citizens have grown up well, I guess.