LONDON: Iranian support for the Houthis in Yemen is “significant” and “lethal,” the special envoy for the country said during a US State Department briefing on Wednesday. Tim Lenderking told lawmakers that Iran has shown no indication of wanting a constructive resolution to the conflict, adding that the US would welcome the idea of Tehran playing a positive role if the regime was willing to do so. Following 70 cross-border attacks from Houthi-controlled areas of Yemen into Saudi Arabia last month, Lenderking said the increase in strikes on the Kingdom was a “very disturbing trend.” He said it had been difficult to halt shipments of weapons from Iran to the Houthis, and called for assistance from the international community to prevent Iranian-made arms from reaching the militia.