Evaluate the accuracy of the following executive capabilities and legislative oversight mechanisms regarding the proclamation of a National Emergency:
1. The highest executive office is authorized to activate emergency protocols preemptively, relying solely on the imminent threat of external aggression.
2. The continuation of an active emergency can be legally terminated by a resolution of disapproval passed exclusively by the lower legislative chamber (Lok Sabha).
3. The central executive is strictly prohibited from revoking an active emergency without first securing a two-thirds majority consensus from both parliamentary houses.