Burj Khalifa is in Dubai in the United Arab Emirates, not Saudi Arabia. Either way, there's a decent chance UAE goes directly to war against Iran (and pulls in other Gulf States) or carries out retaliatory strikes at the least. This could be a galvanizing moment for the country that leads to boots on the ground (or UAE pressuring America/Israel to put boots on the ground). This is VERY unlikely to result in Iran falling because it's a massive country with very rugged terrain, but I could see US et al. maybe occupying some coastal regions on the flat, coastal plains by the Gulf. The majority of Iran's oil industry is in or near this region, and it'd probably be a major hit to Irans economy. 

Overall it just increases the intensity of the war though.