Overview: The Trump-Xi meeting at the G20 this coming weekend and heightened tensions in the Gulf, with the US set to impose new sanctions on Iran's crippled economy are keeping investors on edge. News the opposition won the re-do of the Istanbul mayoral election has lifted the Turkish lira. Most of the major Asia-Pacific equity markets, including the Nikkei, Shanghai Composite, the Kospi, and Australia's ASX were modestly higher, while Europe's Dow Jones Stoxx 600 was a little heavier but looking for direction. US shares are trading with a firmer bias in Europe. Asia-Pacific benchmark