In 61 BC, Julius Caesar's political career was in the dumps and he was heavily in debt. Not long after that, a Gaulish leader, Diviciacus, fled to Rome following a coup and asked the Romans to intervene and restore him to his former position of power. However, the Romans weren't interested; there was no enthusiasm for a war in Gaul.
Because his pleas for military intervention had failed, Diviciacus then started claiming that another people, the Helvetii, were about to invade Gaul. Once again, the Romans weren't interested.
Caesar, however, realised this was a chance for him to gain political power and make some money too. He started backing Diviciacus's claim, stating further that if the Helvetii overran Gaul, there would be an imminent threat to Italy. He played on the Roman's fears of the barbarians and convinced the Senate to send him to Gaul with an army for the purpose of protecting the Gauls from the Helvetii.
Over the next few years, Caesar's army killed over one million of the six million Gauls they were supposed to protect and pillaged Gaul of most of its gold. After his conquest of the Gauls, Caesar was both powerful and rich.
It's not that hard to substitute the names of some of today's politicians for that of Caesar's. You can substitute the names of some modern countries for that of Gaul. As for gold, just read "oil" and "gas".
Politicians have been lying to us since time began about who the enemy is, either by exaggerating the threat from existing enemies, or creating false ones. All they have to do is keep us afraid and we will let them do anything they want. This is never done in our interest.
Declan