From here:
In its quest to become a global superpower, China has regularly become entangled in territorial disputes with its neighbors, butting up against international law.
What word would you replace butting up against with to convey the figurative meaning of it?
Some of guesses are: clashing, colliding, opposing, confronting, defying...
Most definitions I found relate to the literal meaning of "two things being physically close to each other".
Thanks!