Hijacking planes is certainly not new: since the late 1960's, when the tactic first began to be used systematically by the Palestine Liberation Organization and its sympathizers, there have been some 500 hijackings.
Ms. Rovera described seeing buildings burned completely in many areas, an indication, she said, that incendiary devices and chemicals were being used systematically by Syrian forces to destroy homes in "gratuitous" acts of retribution after battles with opposition forces.
The South African Truth and Reconciliation Commission stated that under the apartheid regime, "torture was used systematically by the Security Branch, both as a means of obtaining information and of terrorising detainees and activists.
17 If a local clinical laboratory is used systematically by clinicians and can provide quality controlled diagnostic tests for patients with febrile illness, data on invasive infections and patterns of antimicrobial resistance can be aggregated to provide useful local epidemiological information and to validate and guide recommendations for empirical management.
Sieges - with civilians trapped in their homes and reliant on their captors for food, water, medicines and power - are now being used systematically as weapons of war by government forces and affiliated militia and in some instances by anti-government forces, says the report.
As early as 2013, the UN independent commission of inquiry investigating alleged war crimes in Syria said attacks on medical facilities were being used systematically as a weapon of war by the Assad regime.
Rape committed against victims as young as two is being used systematically as a weapon of sexual violence by both sides in South Sudan's civil war, according to United Nations officials.
The agreed actions were not used systematically by the nurses among all parents.
These processes already exist but could benefit from being used more systematically and by a wider range of partners.
A representative set of protein-protein complexes was used to systematically map the intermolecular landscape by grid-based docking.
