HONG KONG, April 23 : The dollar wobbled near a 1-1/2-week high on Thursday as a standoff between Iran and the U.S. in the Middle East war and lack of progress in peace talks pulled oil prices back above $100 per barrel, weighing on investor sentiment. Tehran seized two ships in the Strait of Hormuz on Wednesday, escalating tensions after U.S. President Donald Trump extended a ceasefire with Iran indefinitely with no sign of peace talks restarting. The two sides now remain divided on a ceasefire, blockade, nuclear issues and control of the strait, leaving the strategic waterway still effectively shut and triggering an energy shock in a blow to economies across the world. The euro was fetching $1.1712, having touched its lowest since April 13 earlier in the session. The single currency is headed for a 0.4 per cent decline in the week, its first drop in four weeks. Sterling stood at $1.3497. The Australian dollar was steady at $0.7165, not far from the four-year high it touched last week. The New Zealand dollar …