Read Senate Dems' letter to President Obama

Three Senate committee chairmen are urging President Obama to impose broad sanctions against Russia’s defense sector, as well as its energy and financial industries, in response to Russia’s alleged involvement in the downing of Flight MH17 last week.

In a letter Tuesday, Senate Foreign Relations Committee Chairman Robert MenendezRobert (Bob) MenendezOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Poll finds little support for Menendez reelection Judge tells Menendez lawyer to 'shut up' MORE (D-N.J.), Senate Armed Services Chairman Carl LevinCarl LevinPresident Trump, listen to candidate Trump and keep Volcker Rule Republicans can learn from John McCain’s heroism Trump and GOP wise to keep tax reform and infrastructure separate MORE (D-Mich.) and Senate Intelligence Committee Chairwoman Dianne FeinsteinDianne Emiel FeinsteinDems call for action against Cassidy-Graham ObamaCare repeal Feinstein pushes back on Trump’s N. Korea policy Feinstein on reelection bid: ‘We will see’ MORE (D-Calif.) asked Obama to consider penalizing Russia for “its material support” of pro-Russian separatists in Ukraine.

Read senators' letter to Obama

Read more from The Hill:

Key Senate Dems to Obama: Broaden Russian sanctions