Houthi top leaders have been absent from activities organized by the terror group in their capital, Sanaa, among other cities under the group's control in northern Yemen, Saudi news outlet Asharq al-Awsat reported on Wednesday.Specialists identify the lack of leadership presence as a direct reflection of security concerns and a state of high alert within the Houthis following Israeli strikes, which have targeted the terror group's leaders.The Houthis have tried to perpetuate a sense of normalcy