The attempt by China's Three Gorges to take control of Portugal's energy group, Energias de Portugal, highlights Beijing's accelerating campaign to invest in Europe -- and a growing push from the European Union to hold back the financial onslaught.
EU needs tough rules to scrutinize inward investment and ensure countries comply

The Energias de Portugal example shows Chinese companies' seriousness in buying critical infrastructure and a need for Europe to deal with it.
The attempt by China's Three Gorges to take control of Portugal's energy group, Energias de Portugal, highlights Beijing's accelerating campaign to invest in Europe -- and a growing push from the European Union to hold back the financial onslaught.