DP World reports H1 earnings jump, considers Iran launch

* Interested in opening facilities on Iran's Caspian Sea -chairman * Talking to Iran officials, met before July sanctions deal * H1 net profit up 21.9 pct after EZW acquisition * Will meet FY targets despite China, other headwinds (Recasts with Iran, outlook, call details) By Nadia Saleem DUBAI, Aug 27 (Reuters) - DP World may launch operations in Iran, the company's chairman said on Thursday, as the global ports operator reported a jump in half-year earnings after buying assets from its parent