The article discusses whether the euro can challenge the dominance of the dollar as an international currency. One view says Europe's big economy and diversification could help the euro compete, while another view says external factors will keep the dollar on top. Data shows the euro is gaining ground as a reserve currency, but the dollar still has strong network support. Just being a big economy isn't enough to beat the dollar, but the euro could become more important as a global store of value in the future.