By Tom Wilson and Elizabeth Howcroft LONDON (Reuters) – A new front has emerged in Israel’s fight against the funding of Iran-backed militant groups from Hamas to Hezbollah: A fast-growing crypto network called Tron. Quicker and cheaper than its larger rival Bitcoin, Tron has overtaken its rival as a platform for crypto transfers associated with groups designated as terror organizations by Israel, the United States and other countries, according to interviews with seven financial crime experts and blockchain investigations specialists. A Reuters’ analysis of crypto seizures announced by Israel…