President Obama expressed "serious concern" over the number of civilian casualties in the Gaza strip.
He expressed serious concern over what happened but did not address whether the shooting was justified.
This raises serious concern over the high reliance on EFs as a metric to assess the performance of cookstoves.
Beijing's foreign ministry expressed "serious concern" over the announcement of the package of military technology and weapons systems.
Sarah Percy-Dove, a bond analyst at Merrill Lynch in London, said there was "very serious concern" over Vivendi's liquidity.
On Friday, two United Nations special advisers expressed serious concern over violence against Christian churches and institutions.
Last week it voiced serious concern over the sudden escalation in rhetoric and urged calm on all sides.
G8 leaders expressed "serious concern" over recent events in Iran, deplored violence against peaceful demonstrators and called on the Iranian authorities to stop the intimidation of foreign missions.
China has expressed "serious concern" over any renegotiation of the one-China policy — which, in Beijing's view, supports its claim that Taiwan is a breakaway state.
However, there is serious concern over the vulnerability to sabotage of the network of pipelines crisscrossing the province as well as other oil field installations.
Howard Archer, chief economist at IHS Global Insight, said: "This is an absolutely dire survey that fuels serious concern over the construction sector.
