One form of technology is communication. This connects every and any country together. If a country is struck by a calamity, different countries sends any form of help/aid to them to help them build up there nation again after the bad incident that happened. So yes i totally agree that technology make relationships between countries stronger.
Hackers can change around words and documents which can cause confusion between countries. Confusion can lead to disagreement, distrust and in extreme cases, it can lead to war. This is only one of the devastating effects of technology. I do not say that they are not any positives, but this is just one against.