The United States believes a surface - to - air missile brought Malaysia Airlines jet down . Quest : We can question whether security should have been in place with everything going on there . A number of airlines have since re - routed services away from the border crossing . Analysts worry about international inspectors being denied access to the site .
The United States believes a surface-to-air missile brought Malaysia Airlines jet down . Quest : We can argue whether restrictions should have been in place with everything going on there . A number of airlines have since re-routed services away from the Ukraine region . Analysts worry about international inspectors being given access to crash site .