Taken from CNBC’s Daily Open, our international markets newsletter — Subscribe today Hello, this is Hui Jie writing to you from Singapore. Welcome to another edition of CNBC's Daily Open. From stagflation warnings and stalled Iran talks to rising oil prices, red flags are everywhere. But investors continue to push markets in the U.S. (and some in Asia) to new highs — is that misplaced optimism or the AI-driven tech gains are going to sustain this rally amid geopolitical worries? Warning signs