这是中国本已咄咄逼人的地区立场的进一步升级，中国国家主席习近平定期派遣海监船和渔政船前往钓鱼岛周边水域，引起韩国和日本的不满。
This amounted to an escalation of China’s already assertive stance in the region, with Chinese President Xi Jinping routinely sending maritime-surveillance and fishery law-enforcement ships to the waters surrounding the islands, spurring protests in South Korea and Japan.