"Mark my words, EUV foundries will be the next battleground between the West and China.
Will this lead to a trade war or a real one? 
We'll find out soon enough. 
One way or another, China will have to secure a reliable supply of 5nm chips "no matter the cost."

transistors are “printed” on a silicon wafer through a complex process called lithography. To produce the 7 nm chip, the team employed a new type of lithography in the manufacturing process