Cybersecurity. A trade imbalance of almost $350-billion. Intellectual property theft. Island building in the South China Sea. North Korea. Human rights. Those are just some of the issues on the table for this week’s U.S.-China summit. Presidents Obama and Xi announced an agreement — details of which are still to be worked out — that their governments will not knowingly support cyber theft of intellectual property or commercial trade secrets. In the next breath, Obama warned of possible sanctions for cybercrime that has happened, or may happen in the future. Despite the stern smiles and niceties of state dinner toasts, there is a lot of work to do on both sides of the U.S.-China relationship.