The Chinese constructing a military base would not lead to any of the three happening.
- India would not dare to bomb a Chinese military base in Pakistan in fear it might start a war between the two nations
- Neither the US or Russia would intervene on behalf of either side. The US already views a Chinese base in Pakistan as inevitable while the Russians really only care about money and not wider geopolitics with regards to China/India/Pakistan
- Sanctions might be possible but then again the US is already considering sanctions against India for purchasing the S-400 system. As such, I doubt this really matters to Pakistan. Any sanctions the US slaps on it would be less than what the US does to India once the S-400 system arrives.
Sanctions & India ?
Lol,
Boeing is here Testing F/A 18 over Vikramaditya & offering it's latest version.
Boeing is also want to sell their F-15 EX which can carry more than 22 Missiles.
GE is Happily selling their F404IN & F414IN to HAL.
LM is nearly agree to sell their F-35 B for four Indian LHDs.
They also gave advance naval guns for Indian ships & want to sell their Tomahawk missiles but we are working on our own.
Honeywell gave order of 2000 Garrett Engines to HAL.
Israel is sending their Operation David Sling & Stunner missiles which they built in partnership with Raytheon & Pentagon have no problem(Dates aren't confirmed for Delivery).
Saab & MBDA delivering their Missiles in advance.
Microsoft is opening their Office of 4000 capacity in my Homestate UP.
Oracale just launched their 2nd data centre & Planning to build 3rd one here.
Posco is Planning to build one of the asias Largest Iron refinery in India.
Rolls-Royce want partnership in the 2nd Aero-Engine program for AMCA mk-2.
Safran is already working on Kaveri
If these are called sanctions or CAATSA then we love sanctions.