McDonald's CEO Says Middle East Conflict Had No Material Q1 Impact On Results, But Operating Environment Remains Volatile; Exec Says Financial Support To Franchisees Under Extra Value Meal Relaunch Program Expected To Be Below Initial Estimate Of About $35M; Early Indicators On McValue's Performance Since Changes Were Introduced A Couple Of Weeks Ago Are In Line With Our Expectations; In China, Expect Macroeconomic Pressures To Persist