My issues with all of that are as follows:
Your definition of 'the wider world' is actually quite narrowly restricted to knowledge of political events, war, and disasters both man made and natural. Perhaps a little sports. Perhaps a little celebrity or royal family gossip. That's what the nightly news will bring into your sitting room.
People can have interests in a wide variety of other areas and live lives of immense artistic or musical creativity, high levels of civic/ charity involvement, and intellectual curiosity, while still steering their children clear of war, mayhem, cruelty, starvation, etc, because they are conscientious about the sort of themes they are willing to expose their children to. This is not 'overprotection'. Media content and games have ratings for a reason. Why include X rated themes in your children's lives?
Nobody moves suddenly from knowing nothing to total exposure. Awareness happens gradually as children naturally develop and mature, become awarebof their own full human nature and that of others. This is accomplished by means of just growing and maturing, along with exposure to literature and life itself. As they grow they start understanding human instincts and they can see how they play out through history and literature.
It is not necessary to expose children to even a small dose of current events in order for them to develop an interest. Geopolitics and the baser elements of human nature in the abstract are beyond the ability of children to process emotionally and psychologically. They can start on it around age 14-15.
Exposure to horror in the form of daily news shows earlier than that does no good and can actually harm them. They don't have the historical knowledge that would help them to make sense in a cognitive way of the Vietnam war or the war in Ukraine. They don't have the hardness of heart to blow past scenes of dead pets in the streets of Eastern Ukrainian cities or families arriving dazed and bewildered in Polish railway stations, and move on to Arsenal v Everton, or whatever. Why would we even want them to develop the thick hide needed to breeze through the news? It's really only useful as a means for the parent to indulge their own news-related anxiety, or to mindlessly recreate their own childhood and the focus of their own parents, all parent-centered behaviour that is not in the best interests of children.
If you want to get children interested in the wider world, eat foods from different cuisines, talk positively about cultures both contemporary and ancient, travel, get stuck into duolingo and get them involved, buy a globe for the home, watch travel and nature programmes, visit museums, play 'what's the capital city'/ 'name three artists from X country' type games. The possibilities when it comes to opening a child's eyes to the wider world while at the same time being mindful and respectful of the child's developmental readiness are endless. There is no need whatsoever to hurry children past the scaffolding, the developmental stages they need, into full exposure to the human condition.