Newly mobilized Ukrainian paratroopers fire a machine gun during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

A newly mobilized Ukrainian paratrooper fires an anti-tank grenade launcher during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Ukrainian newly mobilized paratroopers take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

A newly mobilized Ukrainian paratrooper fires an anti-tank grenade launcher during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Newly mobilized Ukrainian paratroopers fire anti-tank grenade launchers during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Newly mobilized Ukrainian paratroopers take part in a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Ukrainian newly mobilized paratroopers drive and jump from an armoured vehicle as they take part in a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Ukrainian newly mobilized paratroopers take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Ukrainian newly mobilized paratroopers take part in a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” have a rest during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” have a rest during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” have a rest during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian Defence Ministry's assault battalion “Aydar” take part in tactical exercises during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Newly mobilized Ukrainian paratroopers carry an anti-tank grenade launcher during a military drill near Zhytomyr April 9, 2015. (Photo by Valentyn Ogirenko/Reuters)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. The drill is in preparation for the 60th Asian-African Conference planned to be held in Jakarta from 21 to 23 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Indonesian Presidential Security Forces (Paspampres) personnel show their skills during an anti terror exercise in Jakarta, Indonesia on 09 April 2015. (Photo by Bagus Indahono/EPA)

Iraqi security forces demonstrate their skills during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces demonstrate their skills during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces walk with thier weapons during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces walk with thier weapons while smoke rises from a mock bomb as part of military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces demonstrate their skills while smoke rises from a mock bomb as part of military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces walk with thier weapons during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

A member from the Iraqi security forces uses bushes as camouflage while smoke rises from a mock bomb as part of military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

A member from the Iraqi security forces carries his weapon during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces use bushes as camouflage as part of military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces walk with thier weapons during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

A member from the Iraqi security forces uses bushes as camouflage as part of military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)

Iraqi security forces cary their weapons during military training in Jurf al-Sakhar, Iraq April 9, 2015. (Photo by Alaa Al-Marjani/Reuters)