Sinking ship? Shell exec thinks not....

Here is a link to a NPR interview with Shell Oil Company president Steve Inskeep. I am interested in the matter-of-fact manner in which CEOs and top management of both oil and utility companies imply that we as a society have to start using cleaner energy sources. I tend to agree with Mr. Inskeep that displacing millions of barrels of oil/day of imports has both of balance-of-trade, and national security implications, but do not know whether offshore drilling is the only way to achieve these goals.