Freight going through theSuez Canal has dropped by 45% in the two months since attacks by Yemen’s Houthis led shipping groups to divert freight, disrupting already strained maritime trading routes, according to UN agency UNCTAD. UNCTAD, the United Nations Conference on Trade and Development, which supports developing countries in global trade, warned of risks of higher inflation, uncertainty of food security and increased greenhouse gas emissions. Shipping companies have diverted ships from the Red Sea since the Houthi movement, which controls most of the populated parts of Yemen, began attack…