As US-China rivalry intensifies, European states have found themselves caught in the middle. The Post looks at how countries on the continent are responding, ranging from anti-China, to China-friendly, and those trying to walk a line between Washington and Beijing. The second in the four-part series looks at the Czech Republic. Read part one, on Portugal, here, and part three, on Greece, here.Czech Republic President Milos Zeman made clear his views on relations with Beijing in a congratulatory…