People project their wants on Trump and Bernie. There are leftist that see through Bernie: http://www.counterpunch.org/2016/02/16/blood-traces-bernies-iraq-war-hypocrisy/Trump has contradicted himself at every juncture. You cannot take anything he says at face value. This is a man who supported the War in Iraq, and indeed called for an invasion of Iraq, in the media, before it happened. Link. He has called for "boots on the ground" (what he means is US soldiers: humans, not boots) to fight ISIS. Link. He has called for troops to remain in Afghanistan. Link. He has called for strengthening our military, already the largest on the planet. He has called for bombing oil fields in Iraq. He has called for stopping Iran's nuclear program "by any means necessary", and has called for a pre-emptive strike on North Korea. Link.
How are any of these positions liberty positions? They are pro-war, ultra-war-hawk positions which would/will involve the US in even more overseas military quagmires.
Johnson called for a 43% reduction in military spending. This is exactly what needs to happen. We need to bring our troops home from overseas entanglements. Any of the LP candidates have a better foreign policy than Donald Trump, who of course has two positions on any issue.
Bernie supports Obama's kill list. I think Ron Paul had a smart message that united everyone. Corporations/banks have the system that protects themselves from capitalism with government help, the country is broke and money is wasted on wars which create more enemies for ourselves, and that we have lost our freedoms. He wanted to start by cutting spending by 1 trillion dollars. I think Victor Gold nails one of the main reasons Ron Paul was popular: https://youtu.be/HYQDwHPSF5A?t=4m47s