23/3 New NASA Hockey stick models: Sea level

Current readings put sea level rise  at 3mm this is a 50% rise in the last 50 years.
In part glacial melt and partly due to thermal expansion of ocean water.
According to the record sea level has risen 20cm in the last 230-250 years at rates best estimated to be from 1mm/year about 100 year ago to 2mm about 50 years ago and to 3mm now.
According to US Navy Admiral David Titley, Chief Oceanographer, speaking at TEDx we should expect to see sea rise 3 to 6 feet in the 21st century.

Source NASA, US Navy

Meanwhile in 2009 Media Matters reported:
Center for Naval Analysis Concluded that Climate Change has "Grave Implications For Our National Security." A 2007 Center for Naval Analysis study was authored by 11 retired generals and admirals. It stated that "[t]he nature and pace of climate changes being observed today and the consequences projected by the consensus scientific opinion are grave and pose equally grave implications for our national security."
The report issued four conclusions:

1) "Projected climate change poses a serious threat to America's national security."
2) "Climate change acts as a threat multiplier for instability in some of the most volatile regions of the world."
3) "Projected climate change will add to tensions even in stable regions of the world."
4) "Climate change, national security, and energy dependence are a related set of global challenges." [Center for Naval Analysis, 2007]  

Chairman Of Bush's National Intelligence Council: Climate Change Has "Wide-Ranging Implications For US National Security Interests." - June 25, 2008

Editorial

Global warming is not a liberal conspiracy. It is a fact. The work of navies all over the world depends on good science and this is what the science is saying. The US Government's own security assessments are that climate change is a major threat to US security in the 21st century.  It is worth noting that the 2007 study occurred before the 2008 presidential election and could not have been significantly influence by political pressure from Democrats  and thus debunking "Liberal conspiracy" conspiracy theory. perhaps better still the quote from Bush's own administration.