This depends on the system, the kind of information they need, etc...
In the most democratic countries, government sites might prove most reliable. In other, independent journalists might be better. In a way, it's almost impossible to be sure your information isn't biased.... the best is if you know who wrote it and what their agenda is: if they news is left-wing and what they report is not very left-wing, then it's perhaps reliable.
A two-thirds majority vote in both the House of Representatives and in the Senate is required to override a presidential veto. The exact number depends on how many representatives vote; therefore, the actual number is subject to change.
The Treaty of Versailles took power away from Germany as they could not have a substantial military. The quote, "No nation can remove this hand from its throat except by the sword," means that the Treaty of Versailles could not be stopped unless there was a war.
