The conflicts between the two countries are hard to reconcile.
Tips
grammar
难以 is more formal and literary than 很难 (hěn nán). Pattern: 难以 + verb. It's commonly used in writing, news, and formal speech. 难以置信 (nányǐ zhìxìn) = unbelievable/hard to believe.
usage
Common collocations: 难以忘记 (hard to forget), 难以想象 (hard to imagine), 难以接受 (hard to accept), 难以置信 (hard to believe), 难以形容 (hard to describe).