Saudi troops enter Sanaa by...?

This market will resolve to "Yes" if Saudi troops enter any part of Sanaa, Yemen by the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No". "Saudi troops" refers to active military personnel officially affiliated with Saudi Arabia. Only members of the regular armed forces of Saudi Arabia will qualify. Foreign fighters, private military contractors, mercenaries, or any other personnel recruited, paid, trained, equipped or directed by Saudi Arabia who are not members of the Saudi Arabian armed forces will not qualify, regardless of whether they operate under Saudi command or on Saudi Arabia’s behalf. Members of the armed forces of any other state, including those operating as part of a Saudi-led coalition, will not qualify. "Sanaa" refers to Amanat Al Asimah (the Capital Secretariat), Yemen, comprising the following districts: Old City, Al Wahdah, As Sabain, Assafi’yah, At Tahrir, Ath’thaorah, Az’zal, Bani Al Harith, Ma’ain, and Shu’aub. Sanaa Governorate is excluded and entry into Sanaa Governorate alone will not qualify. "Enter" means that the Saudi troops, even temporarily, deliberately operate within any part of Sanaa, other than as prisoners of war or as emissaries as described below. Bombardment, sabotage, naval presence offshore, or temporary disruption of activity will not qualify on their own. … (condensed)