0550 GMT - Global bond markets are likely to focus on the prospect of diplomatic progress between the U.S. and Iran at the UN meeting in New York with President Trump's speech on the agenda. Trump has signaled readiness to meet Iranian President Masoud Pezeshkian. The recent fall in oil prices helped bond yields decline. Brent is higher on Tuesday and was last up 1.4% at $101.75 per barrel. On Monday, the 10-year U.S. Treasury yield closed at 4.949%, while the 10-year German Bund yield ended at 3.455%, according to LSEG.