'roil' is a correct and usable word in written English.
It means to disturb or upset. For example, "The news of the impending storm roiled the crowd of beachgoers."
Is it not undiplomatic of Mr Lee to roil the waters, especially if it is for domestic political purposes?Of course it is.
As tensions roil with Japan, Vietnam and the Philippines over maritime territorial claims, the role of these shadowy figures among China's security policymakers is a topic of much speculation.
But sovereignty disputes between China and its neighbours still roil the waters.
Their case continues to roil Chinese politics.President Barack Obama has faced some criticism at home for allegedly failing to do more to protect Mr Wang (a former police chief widely accused of riding roughshod over the law).
This year the ban was extended into the summer and autumn, as a series of self-immolations by Tibetans in protest at Chinese rule continued to roil Tibetan regions.
So began a statement from Founder Group, an investment firm owned by Peking University, defending its conduct in one of the most bitter disputes to roil Chinese high finance in years.
Weibo are likely to make their lives a lot more difficult at least that was the lesson from a ten-day stand-off in December between police and residents of the coastal village of Wukan in Guangdong.The villagers' protest was typical of thousands that roil the Chinese countryside every year: a complaint about the seizure of agricultural land by local officials for private redevelopment.
Comparisons of Barack Obama's iconography to that of Nazi Germany.As MagicNegroGate continues to roil the Republicans, this stuff has a laugh-so-you-don't-cry air to it.
Stories of seaborne migration used to roil the politics of southern Europe regularly.
But the risk that mixed signals will further roil markets is high: the Federal Open Market Committee is divided on the wisdom of QE and may be even more so once up to five of its 19 seats may turn over in the coming year.Even as a cyclical recovery gathers strength in 2014, structural drags will become more apparent.
The IMF is back in Kiev trying to revive its programme.Default would sap domestic confidence in Ukraine's leadership and roil the currency markets again.
