LOL... As if US will throw nuclear bomb for Vietnam. US will ask you to smash your eggs against Chinese rocks first. Then they will watch a good show. Ask Philippine about Scarborough Shoal.
Dont kid yourselves.
You are living in big delusion. Vietnamese military is backward and poor. Thailand and Myanmar looks even stronger than anything Vietnamese can throw at them.
As if US dont gas you up?
https://en.wikipedia.org/wiki/Agent_Orange
Dont say things that happen to you too to others. It just makes u look stupid
It doesnt matter who u alliance with. Fact is the alliance is nothing than a piece of paper. Philippine has a defence alliance with US. But US did nothing for Philippines for Scarborough shoal. Same as Ukraine with US and yet, Crimea is annexed by Russia.
Please show me more concrete action rather than this self delusion defence pact which u think will work for you. If China nuke the whole vietnam. US and Russia is not going to throw nuke at China. China will still exist and lives happily and vietnam is history. This ia a fact that you small vietnam needs to accept.