Indeed. You speak the perfect truth here. The international relationship is mandatory and that is why we need to have them with almost with the powerful countries around us. If not then we could fall beyond the line and thus economy can disturbed badly here. I mean pick up any country which is not trading with developed country and see they have no real trades and there currencies are always down in value.
Actually this is also the reason why there are ups and downs in the economic flow. Some countries are stronger while some countries may be weak in terms of that.