"Rook" has some thoughts on Obama's record.
The last Bush administration had a policy of taking the fight against Islamic terrorism to the terrorists, to fight them on their own turf instead of fighting them here at home. That policy resulted in NO Islamic terrorist attacks for the remainder of Bush's two terms in office after nine-eleven.
When Obama came into power he ordered the withdrawal of ALL U.S. troops from Iraq, leaving a vacuum of military sway in the region. Obama also initiated a policy of "leading from behind" and "No troops on the ground" in the war on Islamic terrorism, leaving the fight to the Arabs and Persians. All we have left in the fight against Islamic terrorism is a paltry couple thousand troops in Afghanistan, left there at the request of the Afghan president.
In the meantime Obama's policies have nurtured the growth and spread of both ISIS and Al Qaeda, the fall of Yemen to Iran backed Houti fighters (resulting in the loss of our last remaining Human Intelligence in the region), the destabilization of Libya, Iraq, Syria and large swaths of North Africa. Trade routes by sea are increasingly threatened. We have had ISIS and Al Qaeda attacks here at home, in Canada and most of Europe. ISIS has trained fighters living among us at home and thousands more in Mexico and Canada, planning to stage more attacks against us.
While the Middle East and Africa are in turmoil and Europe is shaking in their boots because of Obama's "leading from behind" and "no boots on the ground" policies, the Russians and China have been emboldened. Russia is staging clandestine military invasions of neighboring countries and China has expanded it's naval and other military assets into the waters of other countries, seizing islands and making claims of "territorial waters" in areas of open sea that have been free for all to navigate.
While Russia, China, Iran and North Korea have substantially increased their military and naval buildup, Obama and the Democrats have cut our military to the bone. Weapons and aircraft projects that took decades to develop have been cancelled or severely curtailed. We have decreased our available "boots on the ground" to a pittance of what they were seven years ago.
It took the United States a hundred years and two world wars to become the sole superpower and greatest peace keeper the world has ever known. It has taken Obama and his Democrats a short few years to weaken or destroy most of the diplomatic and military gains of the last hundred years.